Red Rocks Penstemon -
(Penstemon mexicali 'Red Rocks')
Perennial Plants
Other Common Names: Beard Tongue, Beardtongue
Family: Scrophulariaceae Genus: Penstemon Species: mexicali Cultivar: 'Red Rocks'
Gardenality.com
Planted · 10 years ago
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Updated: 10 years ago
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Red Rocks Penstemon Overview· 3,802 viewsBelow are common attributes associated to Red Rocks Penstemon.  Buy this plant from 2 Gardenality Business Profiles »
Plant Type: Perennial Temp / Zone: Zone 5A · -20° to -15° F, Zone 5B · -15° to -10° F, Zone 6A · -10° to -5° F, Zone 6B · -5° to 0° F, Zone 7A · 0° to 5° F, Zone 7B · 5° to 10° F, Zone 8A · 10° to 15° F, Zone 8B · 15° to 20° F, Zone 9A · 20° to 25° F, Zone 9B · 25° to 30° F Sun Exposure: Full / Mostly Sun Soil Type: Clay, Loam, Sand, Silt Soil Drainage: Well Drained Water Needs: Low Level of Care: Low Growth Rates: Fast Flower Color: Rose Pink Attracts: Butterflies, Hummingbirds, Visual Attention Foliage Color: Medium Green Average Height: 1' to 2' Average Width: 1' to 2' Season of Color: Spring Blooms, Summer Blooms Resistant To: Deer Resistant, Drought, Heat, Insect Landscape Uses: Containers / Planters, Landscape Beds, Perennial Garden, Small Groups Growth Habits: Upright Theme Gardens: Butterfly, Cottage, Hummingbird, Perennial, Rock Loading Plant Attributes
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Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F · Comment About Planting
Red Rocks is a Mexican Penstemon that likes sun to partial shade and good drainage. This is a perfect plant for low fertility neutral to alkaline soils that fail to support more needy plants.
When planting Penstemon in heavy or compacted clay soils, I usually mix in a sandy, bag-type topsoil at a 50/50 ratio with the soil removed from the planting hole. Because of this plant has low fertility needs, there's no need to add in any compost to the mix.
Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F · Comment About Pruning
The spent flowers and flower stems of Red Rocks Penstemon can be deadheaded regularly to encourage new growth and flowers.
Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F · Comment About Feeding
Penstemon has low fertility needs. I feed mine lightly with a mild organic plant food at planting time or in spring.
Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F · Comment About Problems
I haven't seen any serious pest or disease problems with penstemon. In the interior Deep South, I would recommend some shade or dappled light conditions in the middle of the day. Consistently wet or soggy soil is not good for this plant.
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